Re: [R] Help with the ts function

From: Spencer Graves <spencer.graves_at_pdf.com>
Date: Mon 13 Feb 2006 - 07:55:33 EST

          What are you asking? If you want to learn about times series in R, I suggest the following:

  1. Ch. 14 in Venables and Ripley (2002) Modern Applied Statistics with S, 4th ed. (Springer). This may or may not answer your specific question.
  2. The article on "Date and Time Classes in R" by Gabor Grothendieck and Thomas Petzoldt (2004) in R News, 4-1: 29-32 (dowloadable from http://CRAN.R-project.org/doc/Rnews/).
  3. The "zoo" vignette in the "zoo" package. A vignette provides both an Adobe Acrobat PDF document and a companion *.R file, which you can work through line by line, testing modifications, etc., as you go. This is my preferred way to learn about new capabilities in R. If you are not familiar with vignettes, see "http://finzi.psych.upenn.edu/R/Rhelp02a/archive/67006.html".
	  hope this helps.
	  spencer graves

p.s. I believe you will increase your average rate of knowledge acquisition about R if you read and follow the posting guide! "www.R-project.org/posting-guide.html".

Nelson, Gary (FWE) wrote:

> I have a time series of temperature data recorded every 2 hours and I
> would like to generate a spectrogram using the spectrum function that
> examines cycles per day. My statement for coding the series using the
> ts function is
>
> bevtemp<-ts(bevtemp,deltat=0.0833334)
>
> where 0.0833334 is 2 hours/24 hours.
>
> I am wondering if this is the correct way to code the data?
>
>
> Thanks for your help.
>
> Gary Nelson.
>
>
>
> ************************************************************************
> *
> Gary A. Nelson
> Massachusetts Division of Marine Fisheries
> 30 Emerson Avenue
> Gloucester, MA 01930
> Phone: (978) 282-0308 x114
> Fax: (617) 727-3337
> Email: Gary.Nelson@state.ma.us
>
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R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Mon Feb 13 07:57:37 2006

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